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Why is “using namespace std;” considered bad practice?

...ated to performance at all. But consider this: you are using two libraries called Foo and Bar: using namespace foo; using namespace bar; Everything works fine, and you can call Blah() from Foo and Quux() from Bar without problems. But one day you upgrade to a new version of Foo 2.0, which now off...
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What does jquery $ actually return?

...e same thing back, whether or not it has any contents is the question. Typically you can check this by using .val() (e.g. $('.myElem').val()) share | improve this answer | fo...
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Disable click outside of bootstrap modal area to close modal

... @mystikacid You should ask a new question for that. It will be better to help you with your problem and other users searching a similar solution. – Doguita Oct 7 '15 at 19:29 ...
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Constantly print Subprocess output while process is running

... return_code = popen.wait() if return_code: raise subprocess.CalledProcessError(return_code, cmd) # Example for path in execute(["locate", "a"]): print(path, end="") share | impr...
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Singletons vs. Application Context in Android?

Recalling this post enumerating several problems of using singletons and having seen several examples of Android applications using singleton pattern, I wonder if it's a good idea to use Singletons instead of single instances shared through global application state (subclassing android.os.Applicat...
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Why does Clojure have “keywords” in addition to “symbols”?

... Clojure documentation for Keywords and Symbols. Keywords are symbolic identifiers that evaluate to themselves. They provide very fast equality tests... Symbols are identifiers that are normally used to refer to something else. They can be used in program forms to refer to function paramete...
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Run java jar file on a server as background process

... Thanks Anton,currntly im stopping the server by killing the process id.i don't think it's best practice.is thery command to to stop the server? – Bernad Ali Aug 25 '12 at 5:01 ...
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What's the difference between KeyDown and KeyPress in .NET?

... that KeyPress relays the character resulting from a keypress, and is only called if there is one. In other words, if you press A on your keyboard, you'll get this sequence of events: KeyDown: KeyCode=Keys.A, KeyData=Keys.A, Modifiers=Keys.None KeyPress: KeyChar='a' KeyUp: KeyCode=Keys.A But if...
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Is there an Eclipse line-width marker?

...t is a vertical line to be drawn in the editor showing where the max line width while I am typing, not just when I run the formmater. I know this feature is available in some capacity because it is displayed in the code formatter property page. ...
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Iterating through a Collection, avoiding ConcurrentModificationException when removing objects in a

...w ArrayList<>(); // This is a clever way to create the iterator and call iterator.hasNext() like // you would do in a while-loop. It would be the same as doing: // Iterator<String> iterator = list.iterator(); // while (iterator.hasNext()) { for (Iterator<String> iterator =...